Looking for a basement contractor in Petersburg, ND? Describe your project once and up to three basement contractors who work in Petersburg and Nelson County get back to you with a quote. It's free and there is no obligation.
Petersburg is home to about 159 people (2024 Census Bureau estimate), a shrinking community (−1.2% since 2020). With 155 people per sq mi, it is a semi-rural area. Full basements are common here and often the cheapest way to add living space.
Petersburg at a glance
- Population (Census Bureau estimate, 2024)
- 159 (−1.2% since 2020)
- Rank in North Dakota
- 178th of 355 cities and towns
- Land area
- 1.0 sq mi
- Population density
- 155 people per sq mi (semi-rural)
- Type
- City (Petersburg city)
- Main county
- Nelson County
What to check before hiring in Petersburg
- Moisture first: waterproof before finishing.
- Egress: in North Dakota, a basement bedroom needs an escape opening.
- Radon: test before you finish.
- Price drivers: size, bathroom, ceiling height, finishes and egress.
Useful official resources
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ICC: International Code Council
Official information and guidance.
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EPA: radon
Official information and guidance.
Services available in Petersburg
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Basement finishing
Framing, insulation, electrical, drywall and flooring of a basement, with permit.
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Basement bathroom or rental unit
Bathroom, kitchenette or legal basement unit with egress and plumbing.
Frequently asked questions in Petersburg
How much does basement finishing cost in Petersburg, ND?
It depends on size, bathroom and finishes. Describe your basement: contractors who serve Petersburg reply with a quote.
How long does it take?
Often several weeks.
Can I rent it out?
Only if local rules allow an accessory unit; check zoning.
Which basement contractors will contact me?
Up to three independent basement contractors who serve Petersburg and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.